## How do you find the length of a diagonal of a regular octagon?

If you want to find the area, perimeter, diagonals, circumradius and inradius of a regular octagon, come in and use the octagon calculator….Here are the formulas for the length of the diagonals:

1. Short diagonal s = a * √(2 + √2)
2. Medium diagonal m = a * (1 + √2)
3. Long diagonal l = a * √(4 + 2√2) .

## What is the length of diagonal of a regular hexagon?

Regular hexagons are comprised of six equilateral triangles; in our question, these triangles each have side length 4 (see diagram). The length of a diagonal is equal to two times the length of the side. In this instance, the answer is 8.

## How do you find the length of the diagonal in a square?

If the area of a square is given, the side length of the square can be calculated. Then, the value of the side length can be used to find the diagonal of the square with the help of the formula, d = a√2.

## What is the formula for volume of a hexagon?

The formula for the volume of a hexagonal prism is, volume = [(3√3)/2]a2h cubic units where a is the base length and h is the height of the prism. We can also use the other formula V = 3abh, where a = apothem length, b = length of a side of the base, and h = height of the prism.

## What is the diagonal of a 12 inch square?

Finding the Diagonal of a Square

Square Size Diagonal
11″ 15 1/2″
11 1/2″ 16 1/4″
12″ 17″
12 1/2″ 17 5/8″

## What is the difference between diagonal and horizontal?

Horizontal lines go from left to right across the page. Vertical lines go straight up and down. Diagonal lines are set at an angle. Inside a shape, a diagonal line goes from one corner to another.

## What is the formula for the number of diagonals in a polygon?

Define the formula. The formula to find the number of diagonals of a polygon is n(n-3)/2 where “n” equals the number of sides of the polygon. Using the distributive property this can be rewritten as (n 2 – 3n)/2.

## What are the maximum number of diagonals in a polygon?

2 diagonals. An octagon has. 20 diagonals. A polygon ‘s diagonals are line segments from one corner to another (but not the edges). The number of diagonals of an n-sided polygon is: n (n − 3) / 2.

## How many diagonals does a regular polygon have?

In a regular six-sided polygon, all diagonals are of equal length. A four-sided polygon has two diagonals. A six-sided polygon has nine diagonals.

## How many angles are there in a polygon?

By the standard definition of a polygon (the only one I know, actually), which is a closed plane figure formed by (3 or more) straight sides and angles, the 10-sided polygons, or decagons, have 10 angles. One way to look at it would be this: choose one of the sides, count the sides clockwise.